CVE-2025-0287 in Partition Manager
Summary
by MITRE • 03/03/2025
Paragon Partition Manager version 7.9.1 contains a null pointer dereference vulnerability within biontdrv.sys that is caused by a lack of a valid MasterLrp structure in the input buffer, allowing an attacker to execute arbitrary code in the kernel, facilitating privilege escalation.
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Analysis
by VulDB Data Team • 03/05/2025
The vulnerability identified as CVE-2025-0287 resides within Paragon Partition Manager version 7.9.1 and specifically targets the biontdrv.sys kernel driver component. This represents a critical security flaw that stems from inadequate input validation mechanisms within the driver's processing logic. The vulnerability manifests when the driver encounters an input buffer that lacks a properly structured MasterLrp element, creating a scenario where the system attempts to dereference a null pointer during kernel execution. Such null pointer dereference conditions are particularly dangerous in kernel-mode components as they can lead to system instability and unauthorized code execution. The affected driver operates at the highest privilege level within the Windows kernel, making any exploitation potential for severe system compromise.
The technical implementation of this vulnerability demonstrates a classic null pointer dereference pattern that aligns with CWE-476, which specifically addresses the dereferencing of null pointers in software systems. When the biontdrv.sys driver processes incoming IOCTL (Input/Output Control) requests, it fails to properly validate the structure of the MasterLrp element within the input buffer. This validation gap allows attackers to craft malicious input that bypasses normal parameter checking, leading to the execution of code at kernel level. The lack of proper bounds checking and structure validation creates an exploitable condition where arbitrary memory access can occur, potentially enabling attackers to execute malicious code with kernel privileges. The vulnerability's impact is amplified by the fact that it operates within a kernel driver that typically runs with elevated permissions, making it a prime target for privilege escalation attacks.
The operational implications of CVE-2025-0287 extend beyond simple system instability to encompass full system compromise and unauthorized access capabilities. Attackers exploiting this vulnerability can execute arbitrary code in kernel context, which provides them with complete control over the affected system. This kernel-level execution capability allows for persistent backdoor installation, system file modification, and privilege escalation to SYSTEM level access. The vulnerability affects systems running Paragon Partition Manager 7.9.1 and potentially other versions that share the same driver component, creating a widespread impact across organizations using this partition management software. Additionally, the vulnerability can be exploited through various attack vectors including malicious USB devices, network-based attacks, or social engineering campaigns that trick users into installing malicious software.
Mitigation strategies for CVE-2025-0287 should prioritize immediate patching of the affected Paragon Partition Manager software to the latest version that contains the necessary security fixes. Organizations should implement comprehensive endpoint protection measures including kernel-mode exploit detection systems and real-time monitoring of kernel driver activities. Network segmentation and privilege separation can help limit the potential impact of successful exploitation attempts. System administrators should also consider implementing application whitelisting policies to prevent unauthorized kernel drivers from loading on critical systems. The vulnerability's characteristics align with ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation,' and T1543, covering 'Create or Modify System Process,' making it particularly relevant for incident response and threat hunting activities. Regular security assessments and vulnerability scanning should include verification of kernel driver integrity and proper input validation mechanisms to prevent similar issues from emerging in other software components.